Suspension means for heat control valves



Sept. 19, 1933. F. F. KISHLINE SUSPENSION MEANS FOR HEAT CONTROL VALVESFiled Aug. 7, 1930 ATTOR EYS.

Patented Sept. 19, 1933' 1 o SUSPENSION MEANS FOR n'EA'r con'mop .Floyd'F. Kishline, Detroit; Mich.; assignorv to,

. Graham-Paige Motors Corporation, a corpora- I tionofMiohiga n Q 7 I At. 7' Application August-7,1930-Serial No.473,706; i. .v

r commend. 251-911 2 Thisinventionr relates to means for'mounting orjournaling an exhaust control valve.

V The main objects of this invention are-to provide improved means forjournaling a manifold heatcontrol-valve; to provide means forjournalingsuch a valvewhich will permit its Operation 7 .under widely differingconditions of temperature; to p rovide an improved mounting for thetrunvnions of an exhaust gasdirecting valve in which yielding meansautomatically preserve-a snug fit at all times so astoprevent leakageand at the same time permit free rotation of the. valve rela- -tive toitsjournal bearings, I a I v e An illustrative embodiment of thisinvention is shown in the accompanyingdrawing, which Fig. 1 is a topplan view of an exhaust manifoldof=an internal combustion motorembodying m mprove v on- 1 .1;

Fig.; 2 is an enlarged vertical medial sectional view showingthe'exhaust gas directingyalve-and drive shaft for rotating the same,the motive unit being shown in elevation.

is provided with a complementary-tapered face 1'1 j against which thebushing seats? h j The trunnion '11 is, also provided with a splitbushing 18 axially 'slidable thereon whichis pro- "videdfwithla taperedface 19 for seatingagainst 60 a complementary tapered face of thebearing 13, The bushings15 and 18 are of identical con- Istruction andas shown in Fi ofthe drawing are provided lwith a saw out therethroughand at the diametrically opposite point'with a notch' 21, 6 -so that thebushings will decrease in diameteror "contact; aroundj'their trunnionswhen urged,

against the tapered faces oftheir respective bearv.

tings. The taperonthe face of these bushings is at an angle 'of 22'degree's from the axis, as it has been found that with this. angle thebushings willcontr'a'ct around their trunnion's so as to snugly embracethem and atithe same time'will' not wedge (51' jam in the tapered facesof their respective bearings.

l and the outer end th'ereof is surrounded by one Fig. 3 is an enlargedfragmentarydetail view of ve 2. ich is i id y ecured-to showing themounting of one of the compression o t 23 b a 1 1 w i e dS- u h springs.I V I i said sleeve and shaft. The end of the sleeve22 1?! Fig. 4-is'anenlarged View. infaoe elevation of h Surrounds the end l'l F a Thetrunnion 11 extendsib'eyond thebearing 13 av split bushingupon which,each'end of "the valve is mounted. r.

In'the. construction shown in the drawing, an

'- -internal combustion motor "5-i's shownp'rovided with an' exhaustmanifold 6 and-an intake manifold 7 which are joined together at theirmedial pointsas more'fully'shown anddescribed in my co-pendingapplication, Serial Number 473,705,"

As disclosed in the above mentioned co-pendapplicationfmeans areprovided for directing the exhaust gases into contact with the intakemanifold for the purpose of raising 'its tem'perature'. This meanscomprisesa valve 8 integrally "drive-shaft 23 is formed on a shaft 9 soas to provide oppositely extending co-axialtrunnions wand; 11 whichp'ro-'jectthrough and are journaled in bearings lzan d 13 formed in the endwalls of thechamber which surrounds the valve 8. Anysuitable-meansmay beprovided'for rotating the'shaft 9 and valve 8,

such as, for example, manual means as provided in my copendingapplication or a thermo unit operating means such as illustrated in thedrawing enclosedcin .thevhousing 34.

At the point where the trunnion val ye 8 a radially: extendingannular'shoulder 14 is provided againstwhich abuts a bushing 15 rh e h sner u t s ell -ttime. b in -p .1

10 .join'sthe 1 mentfsu'ch as housing Stand the other end of which bearsn againstjthe'faceiof a fi'ange 35 which isrigidlyprovided with anaxially= exteriding slot 25 for receiving 'a pin '26 inountedin the end'or the trunnion 11 so as tween.

The opposite endof the drive shaft 23 iseml "braced by one end'of asleeve27, the other end of which surrounds shaft,28 by a pin v functionand Vcoaction with the other elements andis rigidly'secured to a 29'.The "shaft 28 "and; its

are more fully set forthin the above mentioned oo-pending application. tq

which surrounds the ,The end' of 1 the, sleeve 27 provided with a" slot'30 which receives, .a pin 31 rigidlytmountedtransversely through theend of'the drive shaft 23 ,so' that relative r'otation'betweenithesleeve?! and shaft 1 23"is preventedwhile permitting relativeaxialmovement therebetween.

7 Meansare provided; for yleldingly urging the Y drive shaft23 axiallytoward the valve 8 10; seating the bushing 15'a'gainst its taperedhearing face 105 17 and comprises a helical compression spring'32 whichsurrounds the 'sleeve' 2'7. One end of the compression spring gbears,against'a fixed abutthe end wal1 33 of a thermo' -unit",

I anddrive $118,111 23 while permitting relative ax al movement.therebe- II claifni secured to the shaft 23 by a pin 36 which passesthrough the hub 37 of the flange and transversely through the shaft.

\ This spring 32' also serves as a torsion spring ,5 for rotatingtheshaft 23 and valve 8 as more fully set forth in my above-mentionedco-pending application.

Means are provided bushing '18 against its tapered bearing face 20surrounds the protruding-end of the trunnion 11 i in spaced relationthereto. The spring 38 is mounted on a series of axially extendinglugs39 which are struck from spring's'teel washers 40 and 41. The washers 40and ilsurrouhd the trunnion 11 and the marginal edge of the openingstherethrough are curved'inan axial direc- 'tion, so as to provide edgeline contacts at the points 42 and 43 which bear against the end of 2ing I8"respective1y'. In the operation 'of this device the apparatusisuassmbled as showni'in theedrawing with the spring 32 urging the shaft23, valve 8 and trunnions l0 and 11, tothe left as viewed inFig.

2 of the drawing. The shoulder 14, againstwhichthe bushing 15 abuts,-urges thejtapered' face of thebushing l against the complementarytapered face ll of the bearing-1'2;, The'angle ofthe taper; and thestrength of the tension of the spring 32 are soproportioned and arrangedthat thebushing willcbe squeezed snugly around the. trunnion and make asnug fit withboth i=7 he trunnion and the tapered face 17 at all times;

" The bushing -18 is urged against its tapered face ,20 by the spring 38which is preferably of ,one-halfthe strength. of the spring32, thusequally distributing the tension of the spring 32 between thetwobushingslii and 18, I j 7 By reason of the pinr3l being embraced in theslot 30, the shaft 23 is free to be moved axially with respect to theshaft 28 by the spring 32 ;.tion therebetween. l

I g The spring 38 is prevented from being injured shown in Fig. 4 of thedrawing and provided g with the, interiorfnotch 21, these bushings willdecrease in diameter when urged against their respective tapered facesand thereby snugly grip th'e trunnions upon which they are mounted.

Although but one specific embodiment of this 5 1- invention has beenhereinshown and described, it will be understood'that. numerous detailsof the construction shown may be altered or omitted without departingfrom the spirit of this inventions as defined by the-following claims.

I 1. 'In combination, a valve, spaoed-trunnions on said valve, bearingsforsaid trunnions, said bear- I ingshaving tapered fa'cesinclinedin thesame di rection, complementary tapered, portions on said itrunnionslforseating against said tapered faces,

7 and yielding means for urging said tapered porfor yieldingly urgingthe.

and comprises a compression spring '38 whichings having tapered'ifaces,complementary tapered the collar 22 and/the outer face 44 of the bushwhile at the same time preventing relative rota-e By, flanging in thewashers and the members against which they tions against saidtapered'faces, said means operable in any position.

2. In combination, a valve, spaced trunnions on said valve theaxis ofsaid trunnions being substantially horizontal, bearings for saidtrunnions, saidcbearings having tapered faces inclined in the, samedirection, complementary tapered portions on said trunnions for seatingagainst said tapered faces, said tapered portions being independentlymovable relative to each other, and yielding means .for. I ging saidtapered portions against said tapered faces; t

3. .In combination, a valve, spaced trunnions on said valve, bearingsforsaid trunnions, said bearportions on said trunnions for seating againstsaid tapered faces, said tapered portions being independently movablerelative to each other, a

spring urging said valve and one of said tapered portions against itsbearing face, and a'second spring acting betweensaid'first' mentionedspring and the other of said tapered portions, for urging said othertapered portions against its bearing face. 4. In combination, a valve,co-axial oppositelyextending spaced trunnions on said ;valve the axis ofsaid trunnions being substantiallyhorizontal, bearings having taperedfaces forsaid trunnions, one of said trunnions having a taperedportionfforv seating against one of said bearing faces,

a spring urging said valve and trunnions axially to hold said taperedportion snugly against its bearing face, a tapered bushing axiallyslidable on the 'otherof said trunnions, an'da spring for urging saidbushing against the "other of said tapered 1'10 bearing faces.

5. In combination, a valve, co-axial oppositely extending spacedtrunnions on said valve, bearings having tapered faces for saidtrunnions, one '3 of said trunnions having a tapered portion for 1'15seating-against one of said bearing faces, a spring urging said valveand trunnions axially to hold said'tapered portion snugly againstitsbearing face, a tapered bushing axially slidable on the s otherofs'aidt-runnions, and a second spring-act- 'ing between said firstmentionedspring andsaid bushing for urging said bushing axially'againstits bearing face. r 7 i ,6. In combination,.a valve,co-axial oppositely,1 extending spacedtrunm'ons. on said valve, bearings having, taperedfaces for said trunnions, 'one' of saidtrunnions'havinga tapered portionfor seating against one of said bearingfaces, a-spring urging said valveand trunnionsaxially to hold; said tapered portion snugly against itsbearing 1 face, a tapered bushing axially slidable on" the other of saidtrunnions, and a second spring act- 1 ing between said first-mentionedspring and said bushing for urging said bushing axially againstgitsbearing face,-- said second spring being 10f substantially halfthestrength of said first mentioned spring.

-7. In combination, a valve, trunnions on. said valve, bearings for saidtrunnions, said bearings having tapered faces, complementary taperedbushings on 'saidtrunnions for seatingagainst said tapered faces, saidbushings being split so as to decrease in diameter when urged againstsaid tapered faces and springs for urging said bushv ings against saidtapered faces. 8. In combination, a valve, trunnions on said valve,bearings for's'aid trunnions, said bearings having tapered faces,complementary tapered bushings .on said trunnions for seating againstsaid tapered faces, said bushings being independplementary taperedportion on said shaft for seating against said tapered bearing face, ahelical spring surrounding said shaft in spaced relation thereto, awasher engaged by one end of said spring and bearing against said shaft,the marginal edge of the opening in said washer being curved so as tohave line contact with said shaft for transmitting a minimum of heatfrom said shaft to said spring. 7 FLOYD F. KISHLINE.

